137cs dating

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This procedure has been used by researchers to check the authenticity of certain rare wines, most notably the purported "Jefferson bottles".

is the Goiânia accident of 1987, in which an improperly disposed of radiation therapy system from an abandoned clinic in the city of Goiânia, Brazil, was removed then cracked to be sold in junkyards, and the glowing caesium salt sold to curious, unadvised buyers.

When the samples were supposed to be returned the university was unable to find them.

As of 4 November 2015 On 3 and 4 March 2016, unusually high levels of caesium-137 were detected in the air in Helsinki, Finland.

, Cs-137), cesium-137, or radiocaesium, is a radioactive isotope of caesium which is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons.

It is among the most problematic of the short-to-medium-lifetime fission products because it easily moves and spreads in nature due to the high water solubility of caesium's most common chemical compounds, which are salts. The remainder directly populates the ground state of barium-137, which is stable.

As a man-made isotope, caesium-137 has been used to date wine and detect counterfeits A 1972 experiment showed that when dogs are subjected to a whole body burden of 3800 μCi/kg (140 MBq/kg, or approximately 44 μg/kg) of caesium-137 (and 950 to 1400 rads), they die within 33 days, while animals with half of that burden all survived for a year. Together with caesium-134, iodine-131, and strontium-90, caesium-137 was among the isotopes distributed by the reactor explosion that constitute the greatest risk to health.

Caesium-137 in the environment is substantially anthropogenic (human-made).

It is believed that the capsule, originally a part of a measurement device, was lost in the late 1970s and ended up mixed with gravel used to construct the building in 1980. By the time the capsule was discovered, 6 residents of the building had died from leukemia and 17 more had received varying doses of radiation.

In the Acerinox accident of 1998, the Spanish recycling company Acerinox accidentally melted down a mass of radioactive caesium-137 that came from a gamma-ray generator.

Caesium-137 is reported to be the major health concern in Fukushima.

The government is under pressure to clean up radioactivity from Fukushima from as much land as possible so that some of the 110,000 people can return.

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